JP5910288B2 - Decorative film structure and decorative molded member - Google Patents

Description

  The present invention belongs to the technical field of decorative film structures and decorative molded members that can be used for automobile interior parts and the like.

  For example, there is a case where a metal design for producing a high-class feeling is required for automobile interior parts such as a door handle. For this reason, chrome plating having excellent luster, silver-satin-like satin plating, and the like are known. However, chrome plating has too high specularity and may not match the atmosphere in the automobile interior. On the other hand, satin plating has a calm texture, but the process is complicated.

  Accordingly, there is a need for a technique that easily realizes a polished metal surface design that is not too strong and shines dull. As one measure for that purpose, a decorative film structure is proposed in which the optical characteristics are close to those of a metal polished surface and the appearance exhibits a metal polished surface design. Such a decorative film structure can be easily obtained by, for example, printing or painting each layer on the base material of the transfer film. Alternatively, it can be easily obtained by printing or painting each layer on the clear film which is the surface layer of the decorative film structure. And a base material can be easily decorated to a metal grinding | polishing surface tone by transcribe | transferring or adhere | attaching the obtained decorating film structure to a base-material surface. Alternatively, each layer of the decorative film structure may be printed or painted directly on the substrate surface.

  Patent Document 1 discloses that an optical thin film layer including an achromatic layer composed of a high refractive index thin film layer, a low refractive index thin film layer, and / or a pure metal thin film layer is provided on a substrate, thereby providing reflected brightness and reflected saturation. It is disclosed to obtain an optical thin film laminate comprising an achromatic layer having a sufficiently large metallic luster. However, this technique is a technique for adding a metallic luster having a high reflection brightness to a substrate, and does not add a polished metal surface design with a suppressed gloss to the substrate.

JP 2009-83183 A (summary, FIGS. 1 to 5)

  An object of the present invention is to provide a decorative film structure and a decorative molded member whose appearance is a polished metal surface design, and easily realize a polished metal surface design that is not too glossy and shines dull. It is to be.

The decorative film structure according to one aspect of the present invention for solving the above problems is a surface layer composed of a transparent or translucent resin layer, a metallic luster layer formed on the back side of the surface layer, An achromatic layer comprising a plurality of fine dots formed on the surface side of the metallic luster layer or on the surface side of the surface layer, and the achromatic layer is defined by JIS-Z-8729. CIE1976 in lightness ^{(L *)} is 0 to 80, and viewed including the part can be diffused reflected light diffusing material of the incident light, an average aspect ratio of the light diffusion material is 0.5 or less being, The content of the light diffusing material with respect to 100 parts by weight of the component of the achromatic layer is 50 parts by weight or less, the surface roughness on the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. Said fine dough in A area is ¹⁰ -3 ^{~10 5 μm 2,} the area ratio 1 to 80% of said micro dots per unit area in a plan view, defined by JIS-Z-8701 of the metallic luster layer The stimulus value (Y45 °) in the XYZ color system is 10,000 or more .

Here, the CIE 1976 lightness (L ^* ) of the achromatic layer defined by JIS-Z-8729 is the geometric condition a defined by JIS-Z-8722 (normal direction of the sample surface) according to JIS-Z-8729. Illuminating optical axis angle: −45 ± 2 °, light receiving / reflecting optical axis angle: 0 ± 2 °).

  According to this configuration, a part of the light incident on the decorative film structure from the surface layer side is diffusely reflected by the surface roughness on the surface side of the surface layer, and the light is incident on the back surface side of the surface layer or the surface side of the surface layer. A part of the light is absorbed by the apod of the achromatic layer, and a part is specularly reflected (specularly reflected) by the metallic luster layer on the back side of the surface layer. Further, a part of the light is diffusely reflected by the peripheral portion of the dots of the achromatic color layer and the light diffusing material contained in the achromatic color layer. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, with optical properties close to the polished metal surface, and the appearance is polished metal surface. A decorative film structure exhibiting a design is obtained. In particular, by including a light diffusing material in the achromatic layer, sufficient diffuse reflection is achieved so as to produce a unique texture that shines dull due to the surface roughness of the polished metal surface.

In addition, the decorative film structure according to another aspect of the present invention includes a surface layer made of a transparent or translucent resin layer, an achromatic layer formed on the back side of the surface layer, and the achromatic color. A metallic luster layer composed of a plurality of fine dots formed on the surface side of the layer or on the surface side of the surface layer, and the achromatic layer is CIE 1976 defined by JIS-Z-8729 in the lightness (L ^*) is 0 to 80, and viewed contains a light diffusing material capable of diffusely reflecting part of the incident light, an average aspect ratio of the light diffusion material is 0.5 or less, the achromatic The content of the light diffusing material with respect to 100 parts by weight of the component of the layer is 50 parts by weight or less, the surface roughness of the surface side of the surface layer is Ra 2 μm or less, and Rmax 4 μm or less or Sm 50 μm or more, the area of the fine dot 10 ^- To 10 ⁵ [mu] m is ^2, is the area ratio of the fine dot 20 to 99 percent per unit area in a plan view, stimulus values in the XYZ color system defined in JIS-Z-8701 metallic luster layer (Y45 °) is 10,000 or more .

  According to this configuration, part of the light incident on the decorative film structure from the surface layer side is diffusely reflected by the surface roughness on the surface side of the surface layer, and partly by the achromatic layer on the back surface side of the surface layer. Is absorbed, and a part of it is specularly reflected (specularly reflected) by the dots of the metallic luster layer on the back side of the surface layer or the surface side of the surface layer. Also, part of the light is diffusely reflected by the light diffusing material contained in the peripheral edge of the dots of the metallic luster layer and the achromatic layer. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, with optical properties close to the polished metal surface, and the appearance is polished metal surface. A decorative film structure exhibiting a design is obtained. Also in this case, by including the light diffusing material in the achromatic layer, sufficient diffuse reflection that produces a unique texture that shines dull due to the surface roughness of the polished metal surface is achieved.

  As the average aspect ratio and content of the light diffusing material are in the above ranges, the light absorption of the achromatic layer is not significantly impaired, and a unique texture that shines dull depending on the surface roughness of the polished metal surface is produced. Sufficient diffuse reflection is more reliably achieved.

  Here, the stimulus value (Y45 °) of the metallic luster layer in the XYZ color system defined by JIS-Z-8701 is that the illumination optical axis angle with respect to the normal direction of the sample surface is −45 ± 2 °, and the light receiving reflection The Y value is calculated according to the definition of the tristimulus value of the object color by reflection in the XYZ color system defined by JIS-Z-8701, with the optical axis angle being 45 ± 2 °.

Thus, by setting Ra (arithmetic mean roughness) to 2 μm or less as the surface roughness on the surface side of the surface layer, sufficient diffuse reflection for realizing the metal polished surface design can be reliably obtained. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained. In addition, by setting the area of the dot in a plan view to 10 ⁻³ μm ² or more, the dot does not become too small, and light absorption by the achromatic layer is reliably performed. Further, by setting the dot area in plan view to 10 ⁵ μm ² or less, the dot area ratio is increased when the area ratio of dots per unit area in plan view is constant. , The diffuse reflection by the peripheral edge of the dot is reliably performed, and further, the dot does not become too large, and the deterioration of the appearance of the decorative film structure is suppressed. In addition, by setting the area ratio of dots per unit area in plan view to 1% or more, sufficient light absorption is reliably achieved to achieve a polished metal surface design that is not too glossy and dull. Is done. Further, by setting the area ratio of dots per unit area in plan view to 80% or less, the light absorption does not become excessive, and the excessive brightness and / or stimulation value of the decorative film structure is suppressed. The Further, by setting the stimulation value (Y45 °) of the metallic gloss layer to 10000 or more, sufficient regular reflection or metallic gloss for realizing a polished metal surface design can be obtained more reliably.

In the above decorative film structure, the surface gloss of the surface layer is Ra2 μm or less and Rmax 4 μm or less or Sm50 μm or more, and the fineness in a plan view is provided with a metallic gloss layer composed of fine dots. The area of dots is 10 ⁻³ to 10 ⁵ μm ² , the area ratio of the fine dots per unit area in plan view is 20 to 99%, and is defined by JIS-Z-8701 of the metallic luster layer The stimulation value (Y45 °) in the XYZ color system is preferably 10,000 or more.

Thus, by setting Ra (arithmetic mean roughness) to 2 μm or less as the surface roughness on the surface side of the surface layer, sufficient diffuse reflection for realizing the metal polished surface design can be reliably obtained. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained. Further, by setting the stimulation value (Y45 °) of the metallic gloss layer to 10000 or more, sufficient regular reflection or metallic gloss for realizing the polished metal surface design can be surely obtained. Further, by setting the area of the dot in plan view to 10 ⁻³ μm ² or more, the dot does not become too small and regular reflection by the dot is surely performed. Further, by setting the dot area in plan view to 10 ⁵ μm ² or less, the dot area ratio is increased when the area ratio of dots per unit area in plan view is constant. , The diffuse reflection by the peripheral edge of the dot is reliably performed, and further, the dot does not become too large, and the deterioration of the appearance of the decorative film structure is suppressed. By setting the area ratio of dots per unit area in a plan view to 20% or more, that is, the area ratio of an achromatic layer per unit area in a plan view to 80% or less, light absorption does not become excessive and The excessive lightness and / or stimulation value of the decorative film structure is suppressed. Further, by setting the area ratio of dots per unit area in plan view to 99% or less, that is, the area ratio of the achromatic layer per unit area in plan view to 1% or more, the gloss is not too strong and dull. Sufficient light absorption is reliably achieved to achieve a polished metal polished surface design.

  In each of the above decorative film structures, the surface roughness of the surface layer is more preferably Ra 1 μm or less, Rmax 2 μm or less, or Sm 100 μm or more.

  According to this configuration, more sufficient diffuse reflection can be obtained more reliably to realize a polished metal surface design.

In each of the above decorative film structures, it is more preferable that the CIE 1976 lightness (L ^* ) defined by JIS-Z-8729 of the achromatic layer is 0-50.

  According to this configuration, light absorption for realizing a polished metal surface design having a texture that is not too strong and shines dull is achieved more reliably.

  In the above-described decorative film structure, it is preferable that the area ratio of dots of the achromatic layer is 1 to 60% for those having an achromatic layer that is a fine dod.

  According to this structure, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of a decoration film structure is suppressed further.

  In the above-described decorative film structure, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic gloss layer is preferably 20000 or more.

  According to this configuration, sufficient regular reflection or metallic luster to realize a polished metal surface design can be obtained more reliably.

  In the above-described decorative film structure, it is preferable that an area ratio of the fine dots of the metallic gloss layer is 40 to 99% for a metal gloss layer that is a fine dot.

  According to this structure, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of a decoration film structure is suppressed further.

  On the other hand, the decorative molded member according to one aspect of the present invention is such that the decorative film structure as described above is formed on the surface side of the substrate.

  According to this configuration, it is possible to obtain a decorative molded member whose optical characteristics are close to a metal polished surface and whose appearance exhibits a metal polished surface design.

  In the decorative molded member, the base material is preferably a resin molded member.

  According to this configuration, it is possible to increase the degree of freedom of the shape of the decorative molded member whose optical characteristics are close to those of a metal polished surface and whose appearance exhibits a metal polished surface design.

In addition, the decorative molded member according to another aspect of the present invention includes a surface layer made of a transparent or translucent resin layer, and a plurality of surface layers formed on the surface side and / or the back surface side of the surface layer. A film structure including a metallic gloss layer composed of fine dots is provided on the surface side of the substrate, and the substrate has CIE 1976 brightness (L ^* ) defined by JIS-Z-8729. 0-80 a and viewed including the part can be diffused reflected light diffusing material of the incident light, wherein the substrate has an average aspect ratio of the light diffusing material contained in the base material is 0.5 or less The content of the light diffusing material with respect to 100 parts by weight of the component of the achromatic layer is 50 parts by weight or less, the surface roughness on the surface side of the surface layer is Ra 2 μm or less, and Rmax 4 μm or less or Sm 50 μm or more, The fine dots as seen Area is ¹⁰ -3 ^{~10 5 μm 2,} XYZ area ratio of the fine dots per unit area in a plan view is 1 to 80% defined by JIS-Z-8701 of the metallic luster layer The stimulus value (Y45 °) in the color system is 10,000 or more .

  According to this configuration, a part of the light incident on the decorative molded member from the surface layer side is diffusely reflected by the surface roughness of the surface side of the surface layer, and part of the light is absorbed by the surface of the base material. Part of the surface is specularly reflected (specularly reflected) by the dots of the metallic luster layer on the front side and / or back side. In addition, a part of the light is diffusely reflected by the light diffusing material included in the peripheral portion of the dots of the metallic gloss layer and the base material. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, with optical properties close to the polished metal surface, and the appearance is polished metal surface. A decorative molded member having a design is obtained. In particular, by including a light diffusing material in the base material, sufficient diffuse reflection is achieved so as to produce a unique texture that shines dull due to the surface roughness of the metal polished surface.

A decorative molded member according to another aspect of the present invention includes a surface layer made of a transparent or translucent resin layer and a plurality of micropores, and the micropores are filled with the surface layer. A film structure provided with a metallic luster layer formed on the surface side and / or the back side of the surface layer of the surface layer is provided on the surface side of the substrate, and the substrate is look including the JIS-Z-8729 at a defined by CIE1976 lightness ^{(L *)} 0 to 80 a and part of the diffuse reflected thereby is capable of light diffusion material of the incident light, wherein the substrate is on the substrate The average aspect ratio of the light diffusing material contained is 0.5 or less, the content of the light diffusing material with respect to 100 parts by weight of the component of the base material is 50 parts by weight or less, and the surface roughness on the surface side of the surface layer Ra is 2 μm or less and Rmax is 4 μm or less or S And at 50μm or more, the fine pores of the area ¹⁰ -3 ^{~10 5 μm 2} in a plan view, the area ratio of the fine pores per unit area in a plan view is 1 to 80% metallic luster The stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the layer is 10,000 or more .

  According to this configuration, a part of the light incident on the decorative molded member from the surface layer side is diffusely reflected by the surface roughness of the surface side of the surface layer, and part of the light is absorbed by the surface of the base material. A part is specularly reflected (specularly reflected) by the metallic luster layer (parts other than the fine holes) on the front side and / or the back side. In addition, a part of the light is diffusely reflected by the peripheral portions of the fine holes of the metallic luster layer and the light diffusing material contained in the substrate. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, with optical properties close to the polished metal surface, and the appearance is polished metal surface. A decorative molded member having a design is obtained. Also in this case, by including the light diffusing material in the base material, sufficient diffuse reflection that achieves a unique texture that shines dull due to the surface roughness of the polished metal surface is achieved.

  When the average aspect ratio and content of the light diffusing material are in the above ranges, the light absorption of the base material is not significantly impaired, and a unique texture that shines dull depending on the surface roughness of the metal polished surface is produced. Sufficient diffuse reflection is more reliably achieved.

  As described above, according to the present invention, since a decorative film structure and a decorative molded member having an appearance that exhibits a polished metal surface design are provided, the polished metal surface is not too strong and shines dull. The design can be easily realized.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view which shows the layer structure of the decoration film structure which concerns on one Embodiment of this invention, and a decoration shaping | molding member, Comprising: (A) is what the achromatic layer was formed in the back surface side of the surface layer, ( B) is an achromatic layer formed on the surface side of the surface layer. It is a longitudinal cross-sectional view which shows the layer structure of the decorative film structure which concerns on other one Embodiment of this invention, and a decorative molded member, Comprising: (A) is what the metallic luster layer was formed in the back surface side of the surface layer , (B) is one in which a metallic luster layer is formed on the surface side of the surface layer. It is a longitudinal cross-sectional view which shows the layer structure of the decorative molded member which concerns on other one Embodiment of this invention, Comprising: (A) is what the metal luster layer which consists of a some fine dot was formed in the surface side of the surface layer , (B) is a metal glossy layer comprising a plurality of fine dots formed on the back side of the surface layer, (C) is a metal glossy layer comprising a plurality of fine dots formed on the back side of the surface layer, and A filling layer is formed. It is a longitudinal cross-sectional view which shows the layer structure of the decorative shaping | molding member which concerns on other one Embodiment of this invention, Comprising: (A) is what the metal luster layer which has several micropores was formed in the surface side of the surface layer (B) is a metal glossy layer having a plurality of fine holes formed on the back side of the surface layer, (C) is a metal glossy layer having a plurality of fine holes formed on the back side of the surface layer, and A filling layer is formed.

  The inventors of the present invention have repeatedly studied with the goal of realizing a polished metal surface design with a glossy texture that is not too strong and that shines with a decorative film structure having a structure in which a plurality of layers are laminated. As a result, attention was paid to the fact that diffuse reflection, light absorption, and regular reflection (specular reflection) of light incident on the decorative film structure are important elements for realizing a polished metal surface design. The diffuse reflection can be reproduced by the surface roughness of the surface layer of the decorative film structure, the light absorption can be reproduced by the achromatic layer having a relatively low brightness, and the regular reflection has a relatively high stimulation value. It was found that reproduction was possible with a high metallic luster layer, and after forming each layer in an appropriate arrangement, the amount of light incident on the achromatic layer and metallic luster layer was balanced by their area, etc. It was found that it is possible to obtain the appearance of a polished metal surface design in which diffuse reflection, light absorption and regular reflection of each other are combined.

  However, it is not easy to realize a highly polished metal surface design that has a unique texture that shines dull depending on the surface roughness of the polished metal surface. If the surface is simply provided, the surface of the metallic luster layer becomes rough and the whole surface becomes like a painted surface.

  Therefore, the present inventor has repeatedly performed various tests based on such knowledge and ingenuity, so that the metal polished surface condition has a unique texture that is not too strong and shines dull depending on the surface roughness of the metal polished surface. The decorative film structure 10A capable of providing a design was completed.

That is, the decorative film structure 10A according to the present embodiment includes a surface layer 1 made of a transparent or translucent resin layer and a plurality of surfaces formed on the back side of the surface layer 1, as shown in FIG. The achromatic color layer 2 made of fine dots and the metallic gloss layer 3 formed on the back surface side of the front surface layer 1 so as to fill the space between the dots of the achromatic color layer 2 are provided. The achromatic layer 2 has a CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of 0 to 80, and the dots of the achromatic layer 2 contain a light diffusing material composed of fine particles. .

  Here, the surface layer 1 has a diffuse reflection function, the achromatic layer 2 has a light absorption function and a diffuse reflection function, and the metallic luster layer 3 has a regular reflection function.

  In this decorative film structure 10A, the metallic gloss layer 3 is observed from the gap between the dots by disposing a part of the metallic gloss layer 3 in the gap between the dots of the achromatic layer 2. Therefore, when this decorative film structure 10A is viewed from the surface layer 1 side having the diffuse reflection function, the achromatic layer 2 having the light absorption function is finely scattered in the metallic gloss layer 3 having the regular reflection function. doing.

  According to such a configuration, a part of the light incident on the decorative film structure 10 </ b> A from the surface layer 1 side is diffusely reflected by the surface roughness of the surface layer 1. A part of the light is absorbed by the dots of the achromatic layer 2, and part of the light is diffusely reflected by the peripheral edge of the dots and the light diffusing material contained in the dots, and partly by the metallic luster layer 3 on the back side of the surface layer 1. Is specularly reflected (specular reflection). This kind of diffuse reflection, light absorption, and regular reflection of light is not too strong, and a unique polished metal surface design that shines dull depending on the surface roughness of the polished metal surface has been realized. A decorative film structure 10 </ b> A that is close to the metal polishing surface and has an appearance that exhibits a metal polishing surface design is obtained.

  In FIG. 1A, the metallic gloss layer 3 is also present on the back side of the dots of the achromatic color layer 2, and a part of the metallic gloss layer 3 is arranged in the gap between the dots of the achromatic color layer 2. However, the present invention is not limited to this, and the metallic gloss layer 3 does not exist on the back side of the dots of the achromatic layer 2, and the entire metallic gloss layer 3 is disposed in the gap between the dots of the achromatic layer 2. It may be configured.

Further, as shown in FIG. 1B, another decorative film structure 10A according to the present embodiment is formed on the surface layer 1 made of a transparent or translucent resin layer and on the surface side of the surface layer 1. In addition, an achromatic layer 2 composed of a plurality of fine dots and a metallic gloss layer 3 formed on the back side of the surface layer 1 are provided. The achromatic layer 2 has a CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of 0 to 80, and the dots of the achromatic layer 2 contain a light diffusing material composed of fine particles. .

  Here, the surface layer 1 has a diffuse reflection function, the achromatic layer 2 has a light absorption function and a diffuse reflection function, and the metallic luster layer 3 has a regular reflection function.

  In this decorative film structure 10 </ b> A, the metallic gloss layer 3 is disposed under the achromatic color layer 2, whereby the metallic gloss layer 3 is observed from the gap between the dots. Therefore, when this decorative film structure 10A is viewed from the surface layer 1 side having the diffuse reflection function, the achromatic layer 2 having the light absorption function is finely scattered in the metallic gloss layer 3 having the regular reflection function. doing.

  According to such a configuration, a part of the light incident on the decorative film structure 10 </ b> A from the surface layer 1 side is diffusely reflected by the surface roughness of the surface layer 1. A part of the light is absorbed by the dots of the achromatic layer 2, and part of the light is diffusely reflected by the peripheral edge of the dots and the light diffusing material contained in the dots, and partly by the metallic luster layer 3 on the back side of the surface layer 1. Is specularly reflected (specular reflection). This kind of diffuse reflection, light absorption, and regular reflection of light is not too strong, and a unique polished metal surface design that shines dull depending on the surface roughness of the polished metal surface has been realized. A decorative film structure 10 </ b> A that is close to the metal polishing surface and has an appearance that exhibits a metal polishing surface design is obtained.

  In the present embodiment, the diffuse reflection function refers to 20% of the reflected light intensity when reflecting visible light (wavelength: 420 to 670 nm, spread angle: substantially zero degree) incident from the outside at an incident angle of 45 degrees. This refers to the function of reflecting in a direction other than the direction within the regular reflection angle of ± 3 degrees. Alternatively, when visible light (wavelength: 380 to 780 nm, spread angle: substantially zero degree) incident from the outside at an incident angle of 90 degrees is transmitted, a direction within 5% of the transmitted light intensity is within a normal transmission direction angle of ± 3 degrees A function that changes the angle in directions other than. The light absorption function refers to a function of absorbing or transmitting 20% or more of the intensity of visible light (wavelength: 420 to 670 nm, spread angle: substantially zero degree) incident from the outside at an incident angle of 90 degrees. Preferably, when the incident visible light is reflected, the difference in reflectance for each wavelength (420 to 670 nm) is within ± 10%. The regular reflection function means that when visible light (wavelength: 420 to 670 nm, spread angle: substantially zero degree) incident from the outside at an incident angle of 45 degrees is reflected, 90% or more of the reflected light intensity is a regular reflection angle ± The function of reflecting in a direction within 3 degrees. The definitions of the diffuse reflection function, the light absorption function, and the regular reflection function are the same for other embodiments described later.

In the present embodiment, the surface roughness (Ra, Rmax, Sm) of the surface layer 1, the lightness (L ^* ) of the achromatic layer 2, the area of the dots of the achromatic layer 2, the dots of the achromatic layer 2 By adjusting the area ratio, the aspect ratio and content of the light diffusing material contained in the achromatic layer 2, and the stimulation value (Y45 °) of the metallic luster layer 3, in the metal polished surface design of the decorative film structure 10A The degree of diffuse reflection of light, the degree of specular reflection of light, and the degree of light absorption can be independently adjusted to desired values.

  In the present embodiment, the surface roughness of the surface side of the surface layer 1 is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. By setting Ra (arithmetic mean roughness) to 2 μm or less, sufficient diffuse reflection can be reliably obtained to realize a polished metal surface design. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection can be surely obtained in order to realize a metal polished surface design.

  The surface roughness on the surface side of the surface layer 1 is more preferably Ra 1 μm or less, Rmax 2 μm or less, or Sm 100 μm or more. Thereby, sufficient diffuse reflection for realizing a polished metal surface design can be obtained more reliably.

In the present embodiment, the CIE 1976 brightness (L ^* ) defined by JIS-Z-8729 of the achromatic layer 2 is 0-80. By setting the lightness (L ^* ) of the achromatic layer 2 to 80 or less, sufficient light absorption is achieved in order to realize a polished metal surface design that is not too strong and shines dull.

The lightness (L ^* ) of the achromatic layer 2 is more preferably 0-50. Thus, light absorption is more reliably achieved to realize a metal polished surface design having a texture that is not too strong and shines dull.

  The light diffusing material contained in the achromatic layer 2 is a fine particle capable of diffusing and reflecting light incident on the decorative film structure 10, such as mica (mica), ceramic, metal (aluminum, etc.), resin Fine particles made of film or the like. The average aspect ratio (shortest side (diameter) / longest side (diameter)) of the light diffusing material is 0.5 or less, and the content of the light diffusing material is 50 weights with respect to 100 parts by weight of the components of the achromatic layer 2. Or less. When the average aspect ratio and content of the light diffusing material are in the above ranges, a unique texture that shines dull depending on the surface roughness of the polished metal surface without significantly impairing the light absorption function of the achromatic layer 2 is produced. Such sufficient diffuse reflection is achieved.

  Here, it is effective to increase the ratio of diffuse reflection of the light incident on the decorative film structure in order to realize a unique texture that shines dull depending on the surface roughness of the polished metal surface as described above. At this time, for example, it is conceivable to provide minute unevenness on the surface of the metallic gloss layer. In this case, as described above, the surface of the metallic gloss layer becomes rough, and the entire surface becomes like a painted surface. In addition, it is possible to create many unique achromatic layers by using a large number of dots in the achromatic layer and using the diffuse reflection at the periphery of these dots to create a unique texture that shines dull. It is necessary to provide a larger number of devices with technical difficulties. On the other hand, according to the configuration of the decorative film structure 10 in which the achromatic layer 2 contains a light diffusing material, the surface of the metallic luster layer 3 is not roughened and is accompanied by technical difficulties. In addition, sufficient diffuse reflection that achieves a unique texture that shines dull depending on the surface roughness of the polished metal surface is achieved.

In the present embodiment, the area of the dots in plan view is 10 ⁻³ to 10 ⁵ μm ² . By setting the area of the dots to 10 ⁻³ μm ² or more, the dots do not become too small, and light absorption by the dots is reliably performed. By setting the dot area to 10 ⁵ μm ² or less, when the area ratio of dots per unit area in a plan view is constant, the number of dots increases. Diffuse reflection by the peripheral edge portion is reliably performed. Moreover, a dot does not become large too much and the fall of the appearance of 10 A of decorating film structures is suppressed.

  In the present embodiment, the area ratio of dots per unit area in plan view is 1 to 80%. By setting the dot area ratio to 1% or more, sufficient light absorption can be reliably achieved to realize a metal polished surface design having a texture that is not too strong and shines dull. By setting the area ratio of the dots to 80% or less, the light absorption does not become excessive, and the excessive brightness and / or stimulation value of the decorative film structure 10A is suppressed.

  The area ratio of dots in the achromatic layer 2 is more preferably 1 to 60%. Thereby, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of the decorative film structure 10A is suppressed further.

  In the present embodiment, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic luster layer 3 is 10,000 or more. By setting the stimulation value (Y45 °) of the metallic luster layer 3 to 10,000 or more, sufficient regular reflection or metallic luster can be surely obtained to realize a polished metal surface design.

  The stimulation value (Y45 °) of the metallic luster layer 3 is more preferably 20000 or more. Thereby, sufficient regular reflection thru | or metallic luster in order to implement | achieve a metal grinding | polishing surface design can be obtained more reliably.

  The decorative film structure 10A can be easily obtained by printing or painting the layers 1 to 3 on a base material (not shown) of a transfer film, for example. Or it can obtain easily by printing or painting each layer 2 and 3 to the clear film used as the surface layer 1 of the decorative film structure 10A. And the base material 5 can be easily decorated to a metal grinding | polishing surface tone by transcribe | transferring or adhere | attaching the obtained decorating film structure 10A to the surface of the base material 5. FIG. Alternatively, the layers 1 to 3 of the decorative film structure 10 </ b> A may be directly printed or painted on the surface of the substrate 5.

  In this way, a decorative molded member 20A in which the decorative film structure 10A is formed on the surface side of the substrate 5 is obtained. The decorative molded member 20A has optical characteristics close to the metal polished surface, and the appearance exhibits a polished metal surface design.

  The substrate 5 is preferably a resin molded member. This is because the degree of freedom of the shape of the decorative molded member 20 </ b> A whose optical characteristics are close to the metal polished surface and whose appearance exhibits the metal polished surface design can be increased.

  In FIG. 1, reference numeral 4 is an adhesive layer for adhering the backing layer and / or the decorative film structure 10 </ b> A for pressing the metallic gloss layer 3 to the surface layer 1. Further, a protective layer (not shown) for preventing the metallic gloss layer 3 from being eroded or corroded by the backing layer (adhesive layer) 4 is provided between the metallic gloss layer 3 and the backing layer (adhesive layer) 4. May be.

  Next, another embodiment of the present invention will be described.

As shown in FIG. 2A, the decorative film structure 10B includes a surface layer 11 made of a transparent or translucent resin layer, and a metallic luster made of a plurality of fine dots formed on the back side of the surface layer 11. The layer 12 and the achromatic layer 13 formed on the back surface side of the surface layer 11 so as to fill in the space between the dots of the metallic luster layer 12 are provided. The achromatic layer 13 has a CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of 0 to 80, and the achromatic layer 13 contains a light diffusing material made of fine particles.

  Here, the surface layer 11 has a diffuse reflection function, the metallic luster layer 12 has a regular reflection function and a diffuse reflection function, and the achromatic layer 13 has an absorption function and a diffuse reflection function.

  In this decorative film structure 10 </ b> B, a part of the achromatic layer 13 is disposed in the gap between the dots of the metallic gloss layer 12, whereby the achromatic layer 13 is observed from the gap between the dots. Therefore, when this decorative film structure 10B is viewed from the surface layer 11 side having the diffuse reflection function, the metallic luster layer 12 having the regular reflection function is finely scattered in the achromatic layer 13 having the light absorption function. doing.

  According to such a configuration, part of the light incident on the decorative film structure 10 </ b> B from the surface layer 11 side is diffusely reflected by the surface roughness of the surface layer 11. A part is absorbed by the achromatic layer 13, a part is diffusely reflected by the light diffusing material contained in the achromatic layer 13, and a part is specularly reflected by the dots of the metallic luster layer 12 on the back side of the surface layer 11. (Specular reflection) and part of the light is diffusely reflected by the peripheral edge of the dot. This kind of diffuse reflection, light absorption, and regular reflection of light is not too strong, and a unique polished metal surface design that shines dull depending on the surface roughness of the polished metal surface has been realized. A decorative film structure 10 </ b> B that is close to the metal polishing surface and has an appearance that exhibits a metal polishing surface design is obtained.

  2A, the achromatic layer 13 is also present on the back side of the dots of the metallic gloss layer 12, and a part of the achromatic layer 13 is disposed in the gap between the dots of the metallic gloss layer 12. However, the present invention is not limited to this, and the achromatic layer 13 does not exist on the back side of the dots of the metallic gloss layer 12, and the entire achromatic layer 13 is arranged in the gap between the dots of the metallic gloss layer 12. It may be configured.

As shown in FIG. 2B, another decorative film structure 10B according to the present embodiment is formed on the surface layer 11 made of a transparent or translucent resin layer and on the surface side of the surface layer 11. In addition, a metallic luster layer 12 composed of a plurality of fine dots and an achromatic layer 13 formed on the back side of the surface layer 11 are provided. The achromatic layer 13 has a CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of 0 to 80, and the dots of the achromatic layer 13 contain a light diffusing material made of fine particles. .

  Here, the surface layer 11 has a diffuse reflection function, the metallic luster layer 12 has a regular reflection function and a diffuse reflection function, and the achromatic layer 13 has an absorption function and a diffuse reflection function.

  In this decorative film structure 10 </ b> B, the achromatic layer 13 is observed from the gap between the dots by disposing the achromatic layer 13 below the metallic gloss layer 12. Therefore, when this decorative film structure 10B is viewed from the surface layer 11 side having the diffuse reflection function, the metallic luster layer 12 having the regular reflection function is finely scattered in the achromatic layer 13 having the light absorption function. doing.

  With such a configuration, part of the light incident on the decorative film structure 10B from the surface layer 11 side is diffusely reflected by the surface roughness of the surface layer 11 and the achromatic color on the back surface side of the surface layer 11 Part of the light is absorbed by the layer 13, part of it is diffusely reflected by the light diffusing material contained in the achromatic layer 13, and part of it is specularly reflected by the dots of the metallic luster layer 12 on the surface side of the surface layer 11 (mirror surface) Reflected partially) and partly diffusely reflected by the peripheral edge of the dot. This kind of diffuse reflection, light absorption, and regular reflection of light is not too strong, and a unique polished metal surface design that shines dull depending on the surface roughness of the polished metal surface has been realized. A decorative film structure 10 </ b> B that is close to the metal polishing surface and has an appearance that exhibits a metal polishing surface design is obtained.

In the present embodiment, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layer 11, the lightness (L ^* ) of the achromatic layer 13, the aspect ratio and the content of the light diffusing material contained in the achromatic layer 13 By adjusting the stimulation value (Y45 °) of the metallic gloss layer 12, the area of the dots of the metallic gloss layer 12, and the area ratio of the dots of the metallic gloss layer 12, the metal polished surface design of the decorative film structure 10B is adjusted. The degree of diffuse reflection of light, the degree of regular reflection of light, and the degree of light absorption can be independently adjusted to desired values.

  In the present embodiment, the surface roughness of the surface side of the surface layer 11 is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. By setting Ra (arithmetic mean roughness) to 2 μm or less, sufficient diffuse reflection can be reliably obtained to realize a polished metal surface design. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained.

  The surface roughness on the surface side of the surface layer 11 is more preferably Ra 1 μm or less and Rmax 2 μm or less or Sm 100 μm or more. Thereby, sufficient diffuse reflection for realizing a polished metal surface design can be obtained more reliably.

In the present embodiment, the CIE 1976 brightness (L ^* ) defined by JIS-Z-8729 of the achromatic layer 13 is 0-80. By setting the lightness (L ^* ) of the achromatic layer 2 to 80 or less, sufficient light absorption is achieved in order to realize a polished metal surface design that is not too strong and shines dull.

The lightness (L ^* ) of the achromatic layer 13 is more preferably 0-50. Thereby, sufficient light absorption is achieved more reliably to realize a polished metal surface finish design that is not too strong and shines dull.

  The light diffusing material contained in the achromatic layer 13 is made of, for example, mica (mica), ceramic, metal (aluminum, etc.), a resin film, etc., like the light diffusing material contained in the achromatic layer 2 in FIG. Fine particles. The average aspect ratio (shortest side (diameter) / longest side (diameter)) of the light diffusing material is 0.5 or less, and the content of the light diffusing material is 50 weights with respect to 100 parts by weight of the components of the achromatic layer 2. Or less. When the average aspect ratio and the content of the light diffusing material are in the above ranges, a unique texture that shines dull depending on the surface roughness of the polished metal surface without significantly impairing the light absorption function of the achromatic layer 13 is produced. Such sufficient diffuse reflection is achieved.

  In the present embodiment, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic luster layer 12 is 10,000 or more. By setting the stimulation value (Y45 °) of the metallic gloss layer 12 to 10000 or more, sufficient regular reflection or metallic luster can be surely obtained to realize a polished metal surface design.

  The stimulation value (Y45 °) of the metallic luster layer 12 is more preferably 20000 or more. Thereby, sufficient regular reflection thru | or metallic luster in order to implement | achieve a metal grinding | polishing surface design can be obtained more reliably.

In the present embodiment, the area of the dots in plan view is 10 ⁻³ to 10 ⁵ μm ² . By setting the area of the dot to 10 ⁻³ μm ² or more, the dot does not become too small, and regular reflection by the dot is surely performed. By setting the dot area to 10 ⁵ μm ² or less, when the area ratio of dots per unit area in a plan view is constant, the number of dots increases. Diffuse reflection by the peripheral edge portion is reliably performed. Moreover, a dot does not become large too much and the fall of the appearance of the decoration film structure 10B is suppressed.

  In the present embodiment, the area ratio of dots per unit area in plan view is 20 to 99%. By setting the dot area ratio to 20% or more, the area ratio of the achromatic layer 13 per unit area in a plan view is 80% or less, the light absorption is not excessive, and the decorative film structure 10B is excessive. The decrease in brightness and / or stimulation value is suppressed. By setting the area ratio of the dots to 99% or less, the area ratio of the achromatic layer 13 per unit area in a plan view is 1% or more, and the metal polished surface design has a dull shining texture without being too glossy. Sufficient absorbance is reliably achieved to achieve.

  The area ratio of dots of the metallic gloss layer 12 is more preferably 40 to 99%. Thereby, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of the decorative film structure 10B is suppressed further.

  The decorative film structure 10B can be easily obtained by printing or painting the layers 11 to 13 on a base material (not shown) of a transfer film, for example. Or it can obtain easily by printing or painting each layer 12 and 13 on the clear film used as the surface layer 11 of the decorative film structure 10B. And the base material 15 can be easily decorated to a metal grinding | polishing surface tone by transcribe | transferring or adhere | attaching the obtained decorating film structure 10B to the surface of the base material 15. FIG. Alternatively, the layers 11 to 13 of the decorative film structure 10B may be printed or painted directly on the surface of the substrate 15.

  In this way, a decorative molded member 20B in which the decorative film structure 10B is formed on the surface side of the base material 15 is obtained. This decorative molded member 20B has optical properties close to the metal polished surface, and the appearance exhibits a polished metal surface design.

  The substrate 15 is preferably a resin molded member. This is because the degree of freedom of the shape of the decorative molded member 20 </ b> B whose optical characteristics are close to the polished metal surface and whose appearance exhibits a polished metal surface design can be increased.

  In FIG. 2, reference numeral 14 is an adhesive layer for adhering the backing layer and / or the decorative film structure 10 </ b> B for pressing the achromatic layer 13 to the surface layer 11. Further, a protective layer (not shown) for preventing the achromatic layer 13 from being eroded or corroded by the backing layer (adhesive layer) 14 is provided between the achromatic layer 13 and the backing layer (adhesive layer) 14. May be.

  Next, still another embodiment of the present invention will be described.

  As shown in FIG. 3A, the decorative molded member 20C includes a surface layer 21 made of a transparent or translucent resin layer, and a metallic luster layer made of a plurality of fine dots formed on the surface side of the surface layer 21. 22 is formed on the surface side of the base material 24.

  As shown in FIG. 3B, another decorative molded member 20C according to the present embodiment is formed on the surface layer 21 made of a transparent or translucent resin layer and on the back surface side of the surface layer 21. A film structure 10 </ b> C provided with a metallic gloss layer 22 composed of a plurality of fine dots is formed on the surface side of the substrate 24.

  As shown in FIG. 3C, another decorative molded member 20C according to the present embodiment is formed on the surface layer 21 made of a transparent or translucent resin layer and on the back surface side of the surface layer 21. A film structure 10C having a metallic gloss layer 22 composed of a plurality of fine dots and a transparent or translucent filling layer 25 formed on the back surface side of the front surface layer 21 so as to fill the space between the dots of the metallic gloss layer 22 is provided. It is formed on the surface side of the substrate 24.

In each of the decorative film structures 10C shown in FIGS. 3 (A) to 3 (C), the base material 24 is formed of a resin material or the like, both of which have CIE 1976 brightness defined by JIS-Z-8729. (L ^* ) is 0 to 80, and includes a light diffusing material capable of diffusing and reflecting a part of incident light.

  Here, the surface layer 21 has a diffuse reflection function, the metallic luster layer 22 has a regular reflection function and a diffuse reflection function, and the surface of the substrate 24 has a light absorption function and a diffuse reflection function.

  In these decorative molded members 20C, the surface of the substrate 24 is observed from the gaps between the dots because the metallic gloss layer 22 is composed of a plurality of fine dots. Therefore, when this decorative molded member 20C is viewed from the surface layer 21 side having the diffuse reflection function, the metallic luster layer 22 having the regular reflection function is finely scattered in the surface of the base material 24 having the light absorption function. Yes.

  According to such a configuration, part of the light incident on the decorative molded member 20 </ b> C from the surface layer 21 side is diffusely reflected by the surface roughness on the surface side of the surface layer 21, and partly reflected by the surface of the base material 24. Is absorbed and partly diffused and reflected by the light diffusing material contained in the base material 24, and part is specularly reflected (specularly reflected) by the dots of the metallic luster layer 22 on the front surface side or the back surface side of the surface layer 21. In addition, a part of the peripheral edge of the dot is diffusely reflected. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a dull and shiny metal polished surface design with a unique texture that is not too strong and dull depending on the surface roughness of the polished metal surface. Thus, a decorative molded member 20C having optical properties close to a metal polished surface and an external appearance having a metal polished surface design is obtained.

  FIG. 3C shows a configuration in which the filling layer 25 also exists on the back side of the dots of the metallic gloss layer 22 and a part of the filling layer 25 is arranged in the gap between the dots of the metallic gloss layer 22. However, the present invention is not limited to this, and there may be a configuration in which the filling layer 25 does not exist on the back side of the dots of the metallic gloss layer 22 and the entire filling layer 25 is disposed in the gap between the dots of the metallic gloss layer 22.

In the present embodiment, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layer 21, the stimulation value of the metallic gloss layer 22 (Y45 °), the area of the dots of the metallic gloss layer 22, the gloss of the metallic gloss layer 22 By adjusting the area ratio of dots, the lightness (L ^* ) of the surface of the base material 24, the aspect ratio and the content of the light diffusing material contained in the base material 24, the light in the metal polished surface design of the decorative molded member 20C The degree of diffuse reflection, the degree of regular reflection of light, and the degree of light absorption can be independently adjusted to desired values.

  In the present embodiment, the surface roughness of the surface side of the surface layer 21 is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. By setting Ra (arithmetic mean roughness) to 2 μm or less, sufficient diffuse reflection can be reliably obtained to realize a polished metal surface design. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained.

  The surface roughness of the surface side of the surface layer 21 is more preferably Ra 1 μm or less, Rmax 2 μm or less, or Sm 100 μm or more. Thereby, sufficient diffuse reflection for realizing a polished metal surface design can be obtained more reliably.

  In the present embodiment, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic luster layer 22 is 10,000 or more. By setting the stimulation value (Y45 °) of the metallic luster layer 22 to 10,000 or more, regular reflection or metallic luster sufficient to realize a polished metal surface design can be surely obtained.

  The stimulation value (Y45 °) of the metallic luster layer 22 is more preferably 20000 or more. Thereby, sufficient regular reflection thru | or metallic luster in order to implement | achieve a metal grinding | polishing surface design can be obtained more reliably.

In the present embodiment, the area of the dots in plan view is 10 ⁻³ to 10 ⁵ μm ² . By setting the area of the dot to 10 ⁻³ μm ² or more, the dot does not become too small, and regular reflection by the dot is reliably performed. By setting the dot area to 10 ⁵ μm ² or less, when the area ratio of dots per unit area in a plan view is constant, the number of dots increases. Diffuse reflection by the peripheral edge portion is reliably performed. In addition, the dots do not become too large, and a decrease in the appearance of the film structure 10C is suppressed.

  In the present embodiment, the area ratio of dots per unit area in a plan view is 20 to 99%. By setting the area ratio of the dots to 20% or more, the area ratio of the surface of the substrate 24 per unit area in plan view is 80% or less, the light absorption is not excessive, and the decorative molded member 20C is excessive. A decrease in lightness and / or stimulation value is suppressed. By setting the dot area ratio to 99% or less, the area ratio of the surface of the base material 24 per unit area in a plan view is 1% or more, and the metal polished surface design with a texture that is not too strong and shines dull. Sufficient absorbance is reliably achieved to achieve.

  The area ratio of dots of the metallic gloss layer 22 is more preferably 40 to 99%. Thereby, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of the decorative molded member 20C is suppressed further.

In the present embodiment, the CIE1976 lightness (L ^* ) defined by JIS-Z-8729 on the surface of the substrate 24 is 0-80. By setting the lightness (L ^* ) of the substrate 24 to 80 or less, sufficient light absorption is achieved to realize a polished metal surface design that is not too glossy and shines dull.

The lightness (L ^* ) of the surface of the substrate 24 is more preferably 0-50. Thereby, sufficient light absorption is achieved more reliably to realize a polished metal surface finish design that is not too strong and shines dull.

  The light diffusing material contained in the base material 24 is fine particles made of, for example, mica (mica), ceramic, metal (aluminum, etc.), resin film, etc., like the light diffusing material contained in the achromatic layer 2 in FIG. It is. The average aspect ratio (shortest side (diameter) / longest side (diameter)) of the light diffusing material is 0.5 or less, and the content of the light diffusing material is 50 parts by weight with respect to 100 parts by weight of the component of the base material 34. It is as follows. The average aspect ratio and content of the light diffusing material are in the above ranges, so that the light absorption function of the base material 24 is not significantly impaired, and a unique texture that shines dull depending on the surface roughness of the polished metal surface is produced. Sufficient diffuse reflection is achieved.

  Next, still another embodiment of the present invention will be described.

  As shown in FIG. 4A, a decorative molded member 20D according to this embodiment includes a surface layer 31 made of a transparent or translucent resin layer, and a plurality of fine particles formed on the surface side of the surface layer 31. A film structure 10 </ b> D provided with a metallic luster layer 32 having a hole 32 a is formed on the surface side of the base material 34. The surface layer 31 is formed so as to fill the fine holes 32 a of the metallic luster layer 32.

  Further, as shown in FIG. 4B, another decorative molded member 20D according to the present embodiment is formed on the surface layer 31 made of a transparent or translucent resin layer and on the back surface side of the surface layer 31. A film structure 10 </ b> D provided with a metallic luster layer 32 having a plurality of fine holes 32 a is formed on the surface side of the substrate 34. The surface layer 31 is formed so as to fill the fine holes 32 a of the metallic luster layer 32.

  Moreover, as shown in FIG.4 (C), another decoration molding member 20D which concerns on this embodiment is formed in the surface layer 31 which consists of a transparent or translucent resin layer, and the back surface side of the surface layer 31. As shown in FIG. The film structure includes a metallic gloss layer 32 having a plurality of fine holes 32a, and a transparent or translucent filling layer 35 formed on the back side of the surface layer 31 so as to fill the fine holes 32a of the metallic gloss layer 32. The body 10 </ b> D is formed on the surface side of the base material 34.

In each of the decorative film structures 10D shown in FIGS. 4 (A) to 4 (C), the base material 36 is formed of a resin material or the like, both of which have CIE 1976 brightness defined by JIS-Z-8729. (L ^* ) is 0 to 80, and includes a light diffusing material capable of diffusing and reflecting a part of incident light.

  Here, the surface layer 31 has a diffuse reflection function, the metallic luster layer 32 has a regular reflection function and a diffuse reflection function, and the surface of the substrate 34 has a light absorption function and a diffuse reflection function.

  In addition, since the metallic luster layer 32 has a plurality of fine holes 32a, portions other than the fine holes 32a have shapes such as a mesh shape, a mesh shape, a nettle shape, a spider web shape, and the like.

  In these decorative molded members 20D, the surface of the substrate 34 is observed through the fine holes 32a because the metallic gloss layer 32 has a plurality of fine holes 32a. Therefore, when this decorative molded member 20D is viewed from the surface layer 31 side having the diffuse reflection function, the surface of the base material 34 having the light absorption function is finely scattered in the metallic luster layer 32 having the regular reflection function. Yes.

  With such a configuration, part of the light incident on the decorative molded member 20 </ b> D from the surface layer 31 side is diffusely reflected by the surface roughness of the surface layer 31 and part of the light is absorbed by the surface of the base material 34. Then, a part is diffusely reflected by the light diffusing material contained in the base material 34, and a part is specularly reflected by the metallic luster layer 32 (portion other than the fine holes 32a) on the front surface side or the back surface side of the surface layer 31 ( Specular reflection), and part of the fine hole 32a is diffusely reflected by the peripheral edge. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a dull and shiny metal polished surface design with a unique texture that is not too strong and dull depending on the surface roughness of the polished metal surface. Thus, a decorative molded member 20D having optical properties close to a metal polished surface and an appearance exhibiting a metal polished surface design is obtained.

  FIG. 4C shows a configuration in which the filler layer 35 is also present on the back side of the metallic gloss layer 32 and a part of the filler layer 35 is disposed in the fine holes 32a of the metallic gloss layer 32. However, the present invention is not limited to this, and the filling layer 35 may not be present on the back side of the metallic gloss layer 32, and the entire filling layer 35 may be disposed in the fine holes 32 a of the metallic gloss layer 32.

In the present embodiment, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layer 31, the stimulation value (Y45 °) of the metallic gloss layer 32, the area of the fine holes 32a of the metallic gloss layer 32, the metallic gloss layer By adjusting the area ratio of the 32 fine holes 32a, the lightness (L ^* ) of the surface of the base material 34, the aspect ratio and the content of the light diffusing material contained in the base material 34, the metal polished surface of the decorative molded member 20D The degree of diffuse reflection of light, the degree of specular reflection of light, and the degree of light absorption in the design can be independently adjusted to desired values.

  In the present embodiment, the surface roughness of the surface side of the surface layer 31 is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. By setting Ra (arithmetic mean roughness) to 2 μm or less, sufficient diffuse reflection can be reliably obtained to realize a polished metal surface design. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained.

  The surface roughness on the surface side of the surface layer 31 is more preferably Ra 1 μm or less, Rmax 2 μm or less, or Sm 100 μm or more. Thereby, sufficient diffuse reflection for realizing a polished metal surface design can be obtained more reliably.

  In the present embodiment, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic luster layer 32 is 10,000 or more. By setting the stimulus value (Y45 °) of the metallic luster layer 32 to 10,000 or more, sufficient regular reflection or metallic luster can be surely obtained to realize a polished metal surface design.

  The stimulation value (Y45 °) of the metallic luster layer 32 is more preferably 20000 or more. Thereby, sufficient regular reflection thru | or metallic luster in order to implement | achieve a metal grinding | polishing surface design can be obtained more reliably.

In the present embodiment, the area of the fine hole 32a in a plan view is 10 ⁻³ to 10 ⁵ μm ² . By setting the area of the micropore 32a to 10 ⁻³ μm ² or more, the micropore 32a does not become too small, and light absorption by the surface of the base material 34 exposed through the micropore 32a is reliably achieved. By setting the area of the fine hole 32a to 10 ⁵ μm ² or less, the fine hole 32a does not become too large, and regular reflection by the metallic luster layer 32 (part other than the fine hole 32a) is reliably performed. Further, when the area ratio of the fine holes 32a per unit area in a plan view is constant, the number of the fine holes 32a is increased, so that the peripheral length of the fine holes 32a is increased and the diffusion by the peripheral portion of the fine holes 32a is performed. Reflection is ensured.

  In the present embodiment, the area ratio of the fine holes 32a per unit area in plan view is 1 to 80%. By setting the area ratio of the fine holes 32a to 1% or more, the area ratio of the surface of the base material 34 per unit area in a plan view is 1% or more, and the gloss is not too strong and the surface of the polished metal is dull. Absorption sufficient to realize the design is reliably achieved. By setting the area ratio of the fine holes 32a to 80% or less, the area ratio of the surface of the base material 34 per unit area in a plan view is 80% or less, the light absorption is not excessive, and the decorative molded member 20D Excessive brightness and / or a decrease in stimulation value is suppressed.

  The area ratio of the fine holes 32a of the metallic luster layer 32 is more preferably 1 to 60%. Thereby, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of the decorative shaping | molding member 20D is suppressed further.

In the present embodiment, the CIE1976 lightness (L ^* ) defined by JIS-Z-8729 on the surface of the substrate 34 is 0-80. By setting the lightness (L ^* ) of the substrate 34 to 80 or less, sufficient light absorption is achieved in order to realize a polished metal surface design that is not too strong and shines dull.

The lightness (L ^* ) of the surface of the base material 34 is more preferably 0-50. Thereby, sufficient light absorption is achieved more reliably to realize a polished metal surface finish design that is not too strong and shines dull.

  The light diffusing material contained in the substrate 34 is fine particles made of, for example, mica (mica), ceramic, metal (aluminum, etc.), a resin film, etc., like the light diffusing material contained in the achromatic layer 2 in FIG. It is. The average aspect ratio (shortest side (diameter) / longest side (diameter)) of the light diffusing material is 0.5 or less, and the content of the light diffusing material is 50 parts by weight with respect to 100 parts by weight of the component of the base material 34. It is as follows. The average aspect ratio and content of the light diffusing material are in the above ranges, so that the light absorption function of the base material 34 is not significantly impaired, and a unique texture that shines dull depending on the surface roughness of the polished metal surface is produced. Sufficient diffuse reflection is achieved.

  In the present embodiment, the film structure 10C (10D) can be easily formed by, for example, printing or painting each layer 21, 22, 25 (31, 32, 35) on a base material (not shown) of a transfer film. Can be obtained. Alternatively, it can be easily obtained by printing or painting each layer 22, 25 (32, 35) on the clear film to be the surface layer 21 (31) of the film structure 10C (10D). The obtained film structure 10C (10D) can be easily decorated with a polished metal surface by transferring or bonding the surface of the substrate 24 (34) to the surface of the substrate 24 (34). . Alternatively, the layers 21, 22, and 25 (31, 32, and 35) of the film structure 10C (10D) may be printed or painted directly on the surface of the substrate 24 (34).

  In this manner, a decorative molded member 20C (20D) in which the film structure 10C (10D) is formed on the surface side of the base material 24 (34) is obtained. This decorative molded member 20C (20D) has optical properties close to the metal polished surface and the appearance exhibits a metal polished surface design.

  The base materials 24 and 34 are preferably resin molded members. This is because the degree of freedom of the shapes of the decorative molded members 20C and 20D whose optical characteristics are close to the polished metal surface and whose appearance exhibits the polished metal surface design can be increased.

  Note that reference numeral 23 in FIG. 3 and reference numeral 33 in FIG. 4 denote backing layers and / or film structures 10C and 10D for pressing the filling layers 25 and 35 against the surface layers 21 and 31, respectively. It is an adhesive layer for adhering to. Further, a protective layer (not shown) for preventing the filling layers 25 and 35 and the metallic gloss layers 22 and 32 from being eroded or corroded by the backing layers (adhesive layers) 23 and 33 is provided as the filling layers 25 and 35 and the metal. It may be provided between the gloss layers 22 and 32 and the backing layers (adhesive layers) 23 and 33. In this case, the backing layers (adhesive layers) 23 and 33 and the protective layer are transparent or translucent so that the surfaces of the base materials 24 and 34 can be observed in a good state via the metallic gloss layers 22 and 32. .

  In the decorative film structures 10A to 10D of the embodiments of FIGS. 1 to 4 described above, the surface layers 1, 11, 21, 31, achromatic layers 2, 13, and the metallic gloss layers 3, 12, 22 32 and the thicknesses of the filling layers 25 and 35 are not particularly limited. Depending on the situation, the thickness may be in the range of 1 μm to 1 mm, for example.

  The surface layers 1, 11, 21, and 31 may be colorless or colored as long as they are transparent or translucent. By adjusting the colors of the surface layers 1, 11, 21, and 31, the type of metal (for example, aluminum) in the metal polished surface design of the decorative film structures 10 </ b> A to 10 </ b> D can be adjusted to a desired one. .

  The material of the achromatic layers 2 and 13 is not particularly limited. Resins and metals are preferred, but depending on the situation, for example, paper, minerals, other fibrous materials, and other inorganic materials may be used.

  The material of the metallic luster layers 3, 12, 22, and 32 is not particularly limited. For example, resin and metal are preferable. Also by adjusting the color of the metallic luster layers 3, 12, 22, 32, the metal type (for example, aluminum) in the metal polished surface design of the decorative film structures 10A to 10D is adjusted to a desired one. Can do.

  The filling layers 25 and 35 may be colorless or colored as long as they are transparent or translucent. Also by adjusting the colors of the filling layers 25 and 35, the type of metal (for example, aluminum) in the metal polished surface design of the decorative molded members 20C and 20D can be adjusted to a desired one.

  In addition, a transparent or semi-transparent, colorless or colored protective layer on the outer surface of the film structures 10A to 10D or the outer surface of the decorative molded members 20A to 20D, as long as the effects of the present invention are not impaired. May be provided. This protective layer is provided directly on the surface layers 1, 11, 21, 31, for example. This protective layer is provided for protecting the surface of the film structures 10A to 10D or the decorative molded members 20A to 20D. Moreover, this protective layer may be provided in order to adjust the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layers 1, 11, 21, 31. Therefore, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layers 1, 11, 21, 31 referred to in the present invention is the surface roughness (Ra, Rmax, Sm) adjusted by this protective layer. Is included.

  Each of the decorative molded members 20A to 20D of FIGS. 1 to 4 described above has optical characteristics close to a metal polished surface and an external appearance exhibiting a metal polished surface design. Therefore, for example, an automobile interior such as a door handle. It is suitable for parts, home appliance parts, personal computer parts, mobile phone parts, office parts, sports equipment parts, measuring equipment parts, miscellaneous goods parts, and the like.

  Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples.

[Production of decorative film structure]
(Test numbers 1 to 8, 10 to 13, and 15 (test numbers 10 and 11 are comparative examples))
A decorative film structure 10 having the configuration shown in FIG. 1A was produced according to the specifications shown in Table 1. As the surface layer 1, a polycarbonate sheet “PC1151” (plate thickness 0.5 mm) manufactured by Teijin Chemicals Ltd. was used, and an achromatic layer 2 (thickness 3 μm) was formed on one side by screen printing. For the formation of the achromatic layer 2, UV ink “HUG” manufactured by Seiko Advance was used. Next, a metallic luster layer 3 (thickness 2 μm: as a thickness on the achromatic layer 2) was formed on the achromatic layer 2 by screen printing. For the formation of the metallic luster layer 3, ink “MIR-51000 Mirror Silver” manufactured by Teikoku Ink Manufacturing Co., Ltd. was used. Next, a backing layer 4 (thickness 10 μm) was formed on the metallic gloss layer 3 by screen printing. For forming the backing layer 4, ink “MIB-611 White” manufactured by Teikoku Ink Manufacturing Co., Ltd. was used. As described above, the decorative film structure 10 having an aluminum polished surface appearance when observed from the surface layer 1 side was obtained.

  For the formation of the achromatic layer 2 of test number 6, aluminum flake “Alpaste 51-148B (average particle diameter D50 (longest diameter) = 37 μm / average thickness (shortest diameter)) manufactured by Toyo Aluminum Co., Ltd. was used as a light diffusing material. = 0.62 μm) ”, and for the formation of the achromatic layer 2 of the test number 11, aluminum flakes“ WXM630 (average particle diameter D50 (longest diameter / shortest diameter) = 8 μm) manufactured by Toyo Aluminum Co., Ltd. as a light diffusing material ” In order to form the achromatic layer 2 having a test number other than these, an aluminum flake “Alpaste TCR-3040 (average particle diameter D50 (longest diameter) = 17 μm / average thickness” manufactured by Toyo Aluminum Co., Ltd. was used as a light diffusing material. (Shortest diameter) = 0.8 μm) ”was used.

(Test number 2 (comparative example))
A decorative film structure was prepared in the same manner as in test numbers 1 to 8, 10 to 13, and 15 except that the light diffusing material was not used for forming the achromatic layer 2.

(Test numbers 9, 14 (comparative example))
A decorative film structure was prepared in the same manner as in Test Nos. 1 to 8, 10 to 13, and 15 except that the achromatic layer 2 was not formed.

[Appearance evaluation of decorative film structure]
The appearance of the produced decorative film structure 10 was optically evaluated. That is, visible light (wavelength: 420 to 670 nm, spread angle: substantially zero degree) is irradiated from the surface layer 1 side to the decorative film structure 10 at an incident angle of 45 degrees, and the stimulation value Y of the regular reflection angle, that is, regular reflection ( Using a variable angle spectrophotometer made by Murakami Color Research Laboratory, the specular reflection (Y45 °) stimulus value Y with a regular reflection angle of −5 degrees, that is, the diffuse reflection stimulus value (Y40 °). It was measured. Moreover, the external appearance of the decorative film structure 10 was visually evaluated. The results are shown in Tables 1 and 2.

  Here, the specular reflection stimulus value (Y45 °) is JIS-Z-8701 where the illumination optical axis angle with respect to the normal direction of the sample surface is −45 ± 2 ° and the light reception / reflection optical axis angle is 45 ± 2 °. The Y value is calculated in accordance with the definition of the tristimulus value of the object color due to reflection in the XYZ color system defined in (1). Further, the diffuse reflection stimulation value (Y40 °) is JIS-Z-8701 with the illumination optical axis angle with respect to the normal direction of the sample surface set to −45 ± 2 ° and the received light reflection optical axis angle set to 40 ± 2 °. The Y value is calculated according to the definition of the tristimulus value of the object color due to reflection in the prescribed XYZ color system.

  In addition, when the stimulation value of specular reflection (Y45 °) and the diffuse reflection stimulation value (Y40 °) of the real polished surface of aluminum and low gloss satin plating were measured in the same manner, the specular reflection stimulus of the polished surface of aluminum was measured. The value (Y45 °) is in the range of 35000 to 55000 (eg, 38306), the diffuse reflection stimulus value (Y40 °) is in the range of 900 to 1300 (eg, 925), and the specular reflection stimulus value of satin plating (Y45 °) Was in the range of 10,000 to 75000 (for example, 31977), and the diffuse reflection stimulation value (Y40 °) was in the range of 900 to 2600 (for example, 1784).

  As is apparent from Tables 1 and 2, the decorative films of test numbers 1 to 8, 10 to 13 and 15 in which the achromatic layer 2 was formed as compared with test numbers 9 and 14 in which the achromatic layer 2 was not formed. The structure 10 has a specular reflection stimulus value (Y45 °), a diffuse reflection stimulus value (Y40 °), and / or a ratio of the diffuse reflection stimulus value (Y40 °) to the specular reflection stimulus value (Y45 °) (diffuse). The reflection stimulation value (Y40 °) / regular reflection stimulation value (Y45 °) was a value relatively close to that of a real aluminum polished surface. Further, among the decorative film structures 10 of test numbers 1 to 8, 10 to 13, and 15 in which the achromatic layer 2 is formed, the test numbers 1 to 3 to 8 in which the light diffusing material is included in the achromatic layer 2. The decorative film structure 10 of Nos. 10 to 13 and 15 tends to have a higher diffuse reflection stimulation value (Y40 °) than the decorative film structure 10 of Test No. 2 that does not contain a light diffusing material. It can be considered that sufficient diffuse reflection is achieved to realize a unique texture that shines dull due to the surface roughness of the polished metal surface. In addition, the decorative film structure of the test number 11 of the average aspect-ratio 1 of the light-diffusion material contained in the achromatic color layer 2, and the test number 10 whose content of the light-diffusion material contained in the achromatic color layer 2 is 200 weight part As for No. 10, the result of the visual evaluation is bad, but this is because the ratio of the diffuse reflection in the achromatic layer 2 is too high and the balance with the light absorption function by the achromatic layer 2 is impaired. One is considered.

  INDUSTRIAL APPLICABILITY The present invention has wide industrial applicability in the technical field of decorative film structures and decorative molded members that can be used for automobile interior parts and the like.

1, 11, 21, 31 Surface layer 2, 13 Achromatic layer 3, 12, 22, 32 Metallic gloss layer 4, 14 Backing layer (adhesive layer)
5, 15, 24, 34 Substrate 25, 35 Filling layer 10A, 10B, 10C, 10D Decorative film structure 20A, 20B, 20C, 20D Decorative molded member

Claims (15)

A surface layer composed of a transparent or translucent resin layer;
A metallic luster layer formed on the back side of the surface layer;
An achromatic layer comprising a plurality of fine dots formed on the surface side of the metallic gloss layer, or on the surface side of the surface layer, and
The achromatic layer viewed contains a JIS-Z-8729 with CIE1976 lightness ^{(L *)} 0 to 80 defined by, and the light capable of diffusely reflecting part of the incident light diffusing material,
The average aspect ratio of the light diffusing material is 0.5 or less, and the content of the light diffusing material with respect to 100 parts by weight of the component of the achromatic layer is 50 parts by weight or less,
The surface roughness of the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more,
The area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² ,
The area ratio of the fine dots per unit area in plan view is 1 to 80%,
A decorative film structure characterized in that a stimulation value (Y45 °) in an XYZ color system defined by JIS-Z-8701 of the metallic luster layer is 10,000 or more . A part of the light incident from the surface layer side is diffusely reflected by the surface roughness of the surface layer, and part of the light is absorbed by the fine dod of the achromatic layer. The decorative film structure according to claim 1, wherein part of the decorative film is regularly reflected by the glossy layer. A surface layer composed of a transparent or translucent resin layer;
An achromatic layer formed on the back side of the surface layer;
A metallic luster layer composed of a plurality of fine dots formed on the surface side of the achromatic layer, or on the surface side of the surface layer, and
The achromatic layer viewed contains a JIS-Z-8729 with CIE1976 lightness ^{(L *)} 0 to 80 defined by, and the light capable of diffusely reflecting part of the incident light diffusing material,
The average aspect ratio of the light diffusing material is 0.5 or less, and the content of the light diffusing material with respect to 100 parts by weight of the component of the achromatic layer is 50 parts by weight or less,
The surface roughness of the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more,
The area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² ,
The area ratio of the fine dots per unit area in plan view is 20 to 99%,
A decorative film structure characterized in that a stimulation value (Y45 °) in an XYZ color system defined by JIS-Z-8701 of a metallic luster layer is 10,000 or more . The light incident from the surface layer side is partly diffused and reflected by the surface roughness of the surface layer, partly absorbed by the fine dod of the metallic luster layer, and the metal on the back side of the surface layer The decorative film structure according to claim 3, wherein a part of the decorative film is regularly reflected by the glossy layer. The decorative film structure according to any one of claims 1 to 4, wherein a surface roughness of the surface layer of the surface layer is Ra 1 µm or less, Rmax 2 µm or less, or Sm 100 µm or more. The decorative film structure according to any one of claims 1 to 4, wherein CIE 1976 brightness (L ^* ) defined by JIS-Z-8729 of the achromatic layer is 0 to 50. The decorative film structure according to claim 1 or 2 , wherein an area ratio of dots of the achromatic layer is 1 to 60%. The decorative film structure according to any one of claims 1 to 4 , wherein a stimulation value (Y45 °) in an XYZ color system defined by JIS-Z-8701 of the metallic gloss layer is 20000 or more. The decorative film structure according to claim 3 or 4 , wherein an area ratio of the fine dots of the metallic gloss layer is 40 to 99%. A decorative molded member, wherein the decorative film structure according to any one of claims 1 to 9 is formed on a surface side of a substrate. The decorative molded member according to claim 10 , wherein the base material is a resin molded member. A film structure comprising a surface layer composed of a transparent or translucent resin layer and a metallic luster layer composed of a plurality of fine dots formed on the surface side of the surface layer and / or the back surface side of the surface layer, It is provided on the surface side of the material, and the base material has a CIE 1976 lightness (L ^* ) specified by JIS-Z-8729 of 0 to 80 and can diffusely reflect a part of incident light. only contains the a light diffusing material,
The base material has an average aspect ratio of the light diffusing material contained in the base material of 0.5 or less, and a content of the light diffusing material with respect to 100 parts by weight of the component of the achromatic layer is 50 parts by weight or less. ,
The surface roughness of the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more,
The area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² ,
The area ratio of the fine dots per unit area in plan view is 1 to 80%,
A decorative molded member, wherein the metallic gloss layer has a stimulation value (Y45 °) in an XYZ color system defined by JIS-Z-8701 of 10,000 or more . A part of the light incident from the surface layer side is diffusely reflected by the surface roughness of the surface layer, the peripheral edge of the dots of the metallic luster layer, and the light diffusing material contained in the substrate, The decorative molded member according to claim 12, wherein part of the surface is absorbed by the surface, and part is regularly reflected by the fine dots of the metallic luster layer on the front side and / or back side of the surface layer. A surface layer composed of a transparent or translucent resin layer and a plurality of micropores, and the micropores are filled with the surface layer so that the surface side of the surface layer and / or the back side of the surface layer A film structure comprising a metallic gloss layer formed on the substrate is provided on the surface side of the substrate, and the substrate has a CIE 1976 lightness (L ^* ) defined by JIS-Z-8729 of 0. 80 a and viewed including the capable light diffusion material to diffuse reflecting part of the incident light,
The base material has an average aspect ratio of the light diffusing material contained in the base material of 0.5 or less, and the content of the light diffusing material with respect to 100 parts by weight of the component of the base material is 50 parts by weight or less,
The surface roughness of the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more,
The area of the micropore in plan view is 10 ⁻³ to 10 ⁵ μm ² ,
The area ratio of the micropores per unit area in plan view is 1 to 80%,
A decorative molded member having a stimulation value (Y45 °) in an XYZ color system defined by JIS-Z-8701 of a metallic luster layer of 10,000 or more . A part of the light incident from the surface layer side is diffusely reflected by the surface roughness of the surface layer, the peripheral edge of the fine holes of the metallic luster layer, and the light diffusing material contained in the substrate, The decorative molded member according to claim 14, wherein a part of the surface is absorbed by a surface of the surface layer, and a part of the surface layer is specularly reflected by the metallic luster layer on the front side and / or back side.

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